Drill, hammer, and motor-case combined.



W. S. PAYNE. ORILL, HAMMER, A ND MOTOR CASE COMBINED.

APPLICATION FILED OCT 25, 1915.

Patnted Feb. 27, 1917.

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DRILL, HAMMER, AND MOTOR CASE COMBINED. APPLICATION FILED ocrl 25, 1915.

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WALTER S. PAYNE, OE UNIVERSITY PLACE, NEBRASKA.

DRILL, HAMMER, AND MOTOR-CASE COMBINED.

Specification of Letters Patent.

Patented Feb. 27, 1917.

Application filed October 25, 1915. Serial No. 57,800.

To all whom it may concern:

Be itv known that I, lVALTER S. PAYNE, a

citizen of the United States, residing at University Place. in thecounty of Lancaster and 4State of Nebraska, have invented certain newand useful Improvements in' Drills, Hammers, and Motor-Cases Combined,of which the following is a specification.

' My invention relatesto a motor casing, having means for receiving and,holding a tool to be driven by the motor, such as a reciprocatory orrotatable tool, and has for its object the provision of such apparatus,which may 'be conveniently manipulated by a single operator.

An important object of the invention is to provide apparatus of theabove mentioned character, which is simple in construction, inexpensiveto manufacture, strong, durable, and light.

Other objects and advantagesy of the invention will be apparent duringthe course of the followingr description.

Ink the accompanying drawings forming a part of this specification andin which like numerals are employed to designate like parts throughout'the same,

Figure 1 is a central vertical longitudinal sectional view throughapparatus embodying the invention,

Fig. 2 is a similar view with parts broken away, and a rotatable tool ordrill in place.

Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 1, partsbeing omitted, and,

Fig. 4 is an end elevation of the apparatus with the end or head closingthe gear casing, removed. c y

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment of my invention, the numeral 10 designates acylinder lor body portion of the motor casing. Disposed adjacent one endof the cylinder 10 is a head or end 11, carrying an annular flange 12,projecting into the cylinder 10 and secured therein by means of screws13 or the like. Arranged adjacent the opposite end of the cylinder 10 isa head or end 14, carrying an inwardly projecting annular' flange 15,extending into the end of the cylinder 10 and secured thereto by meansof screws 16 or the like. The ends or heads 11 and 14 carry ballbearings 17 receiving 'the ends of an armature shaft 18 having anarmature 19 rigidly mounted thereon. Surrounding the armature are thefield magnets 20, held stationary upon the cylinder 1Q by any suitablemeans.

Formed upon the outer side of the head 14, preferably cast integraltherewith, is a gear casing 21, the outer side of which isA closed by aremovable cap or end 22, having a flange 23, projecting into this gearcasing and held in place by screws 24 or the like.

Formed upon one side of the casing or cylinder 10 is a longitudinalmember 25, having a recess 2G curved in cross-section. The member 25receives a longitudinal clamp 27, forming therewith achamber 28, for :apurpose to be described, The ends of the clamp 2S are provided withelongated openings 29, receiving clampingl screws 30 `havingscrew-threaded engagement with the lug or member 25. It is obvious thatthe Aclamp 27 may be adjusted transversely with respect to the lug Thefunction of having the clamp 25 transversely adjustable is to providemeans for rigidly attaching a ,hammer or the like to the casing 10.

The armature shaft 1S projects into the gear casing 21 and is journaledtherein, as shownat 31. This armature shaft carries a small pinion 32,engaging a larger pinion 33, carried by a stub shaft 34, journaled inthe gear casing, as shown. The larger pinion 33 engages a larger pinion35, having an opening 36, which is square in cross-section. This openingis arranged adjacent small and large openings 37 and 38, which arecircular in cross-section.

The numeral 39 designates a reciprocatory hammer as a whole, of any wellknown or preferred construction, such as the hammer shown and describedin my pending application for Power operated hammer, Serial No. 16,389,filed March 23, 1915. 7liile this hammer will not be described in detailit will be stated that it embodies a casing 40, adapted to 'be insertedwithin the clamp 27 and held therein. Arranged within this casing is arotatable cam 41, which cannot reciprocate and is rigidly mounted upon ashaft 42, having a square portion 43, to fit in the opening 3G andcircular' portions 44 and 45, to enter the openings 37 and 3S. Therotation of the shaft 42 drives the cam 41, which contacts with areciprocatory cam 46, caus- `ing a hammer 47 to reciprocate, and strikea reciprocatory tool 48. The -cam 41 is rotatable but cannot movelongitudinally while Vthe cam 46 is movablelongitudinally but cannotrotate. It is obvious that by virtue of the shape of the contactingfaces of these cams that the turning movement of the cam 4l will' movethe cam i6 rearwardly, While a spring 4G will move it forwardly. The cam#l1 is rigidly attached to the shaft 42.,

ln Fig. 2,-the power operated hammer is removed and a rotatable drillsubstituted therefor. embodying a rotatable shaft 49,

Y carriedin ball bearings 50, inserted in the clamp 27 and held therein.The shaft 49 is similar in constructlon to the shaft 42 and has a squareportion 51 and small and large cylindrical portions and 53, to enter theopenings 37 and 38. lt is thus obvious that the pinion 35 will drive theshaft 49. The shaft {if} carries at its forward end a drill chuck 5l.carrying` a drill 55.

-lt is thus apparent that the tool to be operated, either reciprocatoryor rotatable,

may he conveniently inserted within the clamp. 27, and connected withthe gear 35 for rotation therewith.

In order that the apparatus may be conveniently manipulated, Vthe cap22' is provided with a cylindrical stud ortrunnion 56,

"titting'in a tubular socket 57 formed integral Pivotally mounted withinthe casing 59, at (32, is a swinging 'lever 63, the -outerend of whichprojects outwardly'through a longi-` tudinal slot 6l. This lever ispushed outwardly by a spring 65, as shown. Pivoted within the casing 59,upon a stationary pin vorA member (36 and insulated therefrom is aswitch (S7, 'one end of which Ais adapted to engage and disengage astationary contact (S8. The switch (S7 is provided with a crank G9,rigidly connected therewith and insulated therefrom.' This crank servesto turn the switch (i7 and is moved by `a link 70, pivo'tally connectedtherewith and with the lever y G3, as l shown.

The nuineral71 designates a source of current, one pole of which isconnected with a l wire72, ektending through insulating sleeves 7? andpassinglinto the casing 59. The wire, 72 passes through an `insulatingsleeve 74 and enters the cylinder 10 and isv connected with one brush 75 of the motor. This brush engages the usual commutator 76 engaging thebrush 77 of opposite polarity. `The brush 77 is connected with the wire78 passing through insulating sleeves 79 and 80 `and' connected with thestationary contact'GS.

Having permanent electrical connection with one end of the switch 67 isa wire 81, having electrical connection with the opposite pole of thesource of-eurrent. 'v

' The operation of the apparatus is simple and is as follows:

The shaft 42 or 49 of the tool to be operated is arranged withinl theclamp 27and the tool held therein by proper manipulation of the clamp.'The end of this rod or shaft is connected with the gear 35, as isobvious. This'having been done, the tool isbrought into suitableproximity to the work and the apparatus may be' conveniently supportedwith the left hand while the casing 59 is grasped in the right hand. Thelever G3 may be conveniently moved inwardly by the ,thumb `or the likeand upon such movement the switch 67 engages the contact (SS. When thistakes place current flows from the positive pole of the source ofcurrent through wire 72, brush 75, commutator segment, armature 19,commutator segment, brush' 77,

wire 7S, contact 68, switchl (37,. and wire S1,

back to the lopposite pole of thesource of current 7l. rThe armatureshaft is a'ccordingly rotated, which rotation is transmitted to thegears 32,l 33 and 35, and the rod or shaft of the tool driven at areduced speed.

lt is to be understood that the formof my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvariouschanges in the shape, size, and arrangement of parts mayberesorted to without departing from the spirit of the invention'o'r thescope of the subjoined claim. 'y Having thus described the invention, I

motor casing and extending downwardly in proximity`to the rear end ofthe tube, a train of gears arranged within the gear casing and connected`with the armature shaft and the shaft of the tool, a handle secured tothe rear side of the gear casing, and ar switch lever carried by avhandle to control` the operation of the motor.

In testimony whereof I affix my signature in presence of two witnesses.l

WALTER s. PAYNE.

Witnesses:

O. N. SHORE, J. F. JoHNsoN.

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